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Old 07-31-2019, 08:35 AM   #1
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Registered: Jul 2005
Distribution: Slackware
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Nvidia HDMI devices unplugged in pavucontrol

I've been searching all over here and Google for two days now and haven't found an answer that works for me. On a fresh install of Slackware64 14.2 on a new ssd. So far I have installed only slackpkg+, multilib and compat32 files, alienBob's libreoffice and chromium, and jre, and used slackpkg to fetch all updates to date. The first time I tried to do something with sound I discovered this problem. Slack is installed with XFCE, Fluxbox and using the default LILO. None of the KDE stuff is installed.

I have a SB0350 Audigy2 and a GTX750Ti reference card and the computer is a desktop connected to an HDTV via HDMI. In pavucontrol I can see both cards and all of their devices in the configuration tab; but for the HDMI all of the devices are marked unplugged. When a stream is playing I can see the activity on the output tab but there is no sound from the speaker.

Previously in 32-bit Slackware 14.2 it worked perfectly, and I can still swap the ssd with the old hdd to boot the old os and it still works there. I have connected the hdd in a usb enclosure to compare files, and I see that /etc/asound.conf and all files under /etc/pulse are the same, in fact they are not changed from stock. I have also compared rc.alsa and rc.pulseaudio. Alsamixer shows all of the devices on both cards and nothing is muted. I copied the asound.state from the old hdd to var/lib/alsa and alsactl restore says no state is present for card Nvidia, which is true as it state.Audigy but no state.Nvidia.

speaker-test on hw:0,3 shows the left and right channels being tested, and aplay -L shows all of the devices with the Audigy as sysdefault. I have copied my minimal but working ~/.asoundrc from the hdd and also deleting the ~/.config/pulse.
pcm.pulse {
    type pulse

ctl.pulse {
    type pulse

pcm.!default {
    type pulse

ctl.!default {
    type pulse
I've also tried adding lines to /etc/asound.conf:
defaults.ctl.card 0
defaults.pcm.card 0
defaults.pcm.device 3
This makes pavucontrol show an option of Analog stereo for the HDMI but it still does not make sound.

The only change I have tried that I have not reverted is copying my /etc/modprobe.d/alsa-base.conf and blacklist.conf which did not yet exist. blacklist.conf is from 2011 and the only changes from stock were a couple lines I'd added to help with ndiswrapper and a usb video capture. This is the alsa-base.conf:
options snd_hda_intel enable=1 index=0
options snd_emu10k1 enable=1 index=1
options snd slots=snd_emu10k1,snd_hda_intel
If I set snd_emu10k1 to enable=0 it disappears from pavucontrol but the HDMI remains unplugged. I have tried removing my user from the audio group as I'd seen suggested somewhere. I briefly tried logging in as root but it is the same for root. After adding myself back to audio I also added myself and root to the pulse group but still no luck. The last thing I tried was adding append = "irqpoll" in the lilo.conf. I always used it in 32-bit before using GRUB.

For now I can plug separate speakers into the SB but I would really like to get the HDMI audio working. Thanks in advance for any ideas.
Old 07-31-2019, 11:56 AM   #2
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Registered: Jul 2005
Distribution: Slackware
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Forgot to add that I am using the latest official kernel, 4.4.186. Also, when I first noticed this I was using an unmodified xorg.conf with the nouveau driver. When I installed the proprietary nvidia driver I allowed it to blacklist nouveau and change xorg.conf automatically, so I still had not made any manual changes. Finally I made a backup of it and copied the file from the old hdd. I didn't expect anything in xorg.conf to affect audio but it doesn't hurt to try.
Old 08-11-2019, 10:16 PM   #3
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Registered: Jul 2005
Distribution: Slackware
Posts: 1,218

Original Poster
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This still isn't solved. In the past week I've tried a few more things: I briefly removed the SB card long enough to find that it doesn't affect the HDMI audio; added nomodeset to append= in lilo.conf; added probe_mask=0xf to the options in alsa-base.conf; rolling back to nvidia driver 390.x; in ~/.asoundrc set pcm!.default hdmi:CARD=NVidia,DEV=3

While in an X session I have checked in /proc/asound. cards lists 0 as HDA-Intel - HDA NVidia, and devices lists 0-3, 0-7, and 0-8 as digital audio playback. Under card0 directory codec#0 has Nodes 0x08 - 0x0b listed as Audio Output. There are eld#0.0, eld#0.1 and eld#0.2. .0 and .2 contain
monitor_present		0
eld_valid		0
but .1 contains
monitor_present		1
eld_valid		1
monitor_name		NS-19D310NA19
connection_type		HDMI
eld_version		[0x2] CEA-861D or below
edid_version		[0x3] CEA-861-B, C or D
manufacture_id		0x5908
product_id		0x50
port_id			0x200
support_hdcp		0
support_ai		0
audio_sync_delay	0
sad_count		2
sad0_coding_type	[0x2] AC-3
sad0_channels		6
sad0_rates		[0xe0] 32000 44100 48000
sad0_max_bitrate	640000
sad1_coding_type	[0x1] LPCM
sad1_channels		2
sad1_rates		[0xe0] 32000 44100 48000
sad1_bits		[0x20000] 16
There is also pcm3p, pcm7p and pcm8p directories. Within each is a info file and all have the stream field as PLAYBACK. In 3p the id field is HDMI 0, in 7p the id is HDMI 1 and in 8p the id is HDMI 2


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